# 提取电子邮箱
import re

content = """
    dadadafa@# 每10000万次模拟后输出当前进度版权声明：51211@qq.com
    本文为博主原创文章，遵循 CC 4.0 BY-SA 
    版权协议，转载请附上原文出处链接和本声明1231@,
    原文链接：https://blog.csdn.net/2303_79232676/article/details/135967785
    """

pattern = re.compile(r"""
    [a-zA-Z0-9_-]+
    @
    [a-zA-Z0-9]+
    \.
    [a-zA-Z]{2,4}
    """, re.VERBOSE)

results = pattern.findall(content)
for result in results:
    print(result)
